Cutlery-polishing machine.



U. H. HEMMING.

GUTLERY POLISHING MAGHINE.

APPLICATION FILED MAY 27, 1913.

Patented June 2, 1914,

4 SHEETS-BHBET 1.

WITNESSES: //v l/EN 70/? v I Q ATTORNEY COLUMBIA PLANOGRAPH C0. WASHINGTON, n. c.

C. H. HEMMING.

GUTLERY POLISHING MACHINE.

APPLIOATION FILED MAY 27-, 1913.

Patented June-2, 1914.

4 SHEETS-SHEET 2.

WI T NESSES A TTOR/VEY O. H. HEMMING. CUTLBRY POLISHING MACHINE. APPLICATION FILED MAY 27, 1913. 1 Q98 7Q6 Patented June 2, 1914.

4 SHEETS-SHEET 3.

Q A TTORNEV G. H. HEMMING. GUTLERY POLISHING MACHINE.

APPLICATION FILED MAY 27, 1913.

Patented June 2, 1914.

4 SHEETS-SHEET 4.

win/8858;

,4; ATTORNEY lTED STATES PATENT OFFICE.

CARL H. HEMMING, OF NEW HAVEN, CONNECTICUT.

G'UTLERY-POLISHING' MACHINE.

messes.

To all whom it may concern Be it known that l, CARL H. HEMMING, citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Gutlery-P'olishing Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to cutlery polishing machines, and it consists in certain details of COIlStI'UClZlOIi to be more fully set forth in the following specifications.

To enable others to understand my invention, reference is had to the accompanying drawings in which the same figures and letters of reference indicate like parts throughout the several views:

Figure 1 represents an upper plan view of the machine; Fig. 2 is a front elevation of the machine; Fig. 3 is a rear elevation of the machine; Fig. 1 is an end elevation of the machine looking in the direction of arrow a of Fig. 1; Fig. 5 is a detail view of the scroll plate; sectional view of the cam shaft; broken. view of the shipper and sectional view of the lever connected with the starting mechanism; and Fig. 6 is a detail reverse view of the scroll plate, showing po sition of the traveler screw or pin when the crank shaft is stationary, and sectional view of the crank shaft.

Among the several improved featuresof my invention is means for vertically reciprezating the knife holder during its longitudinal travel, so that the entire width of the knife blade is covered or brought directly in contact with the polishing wheels during such longitudinal travel.

The opposed polishing or abrasion wheels 1 and 2 are mounted on their shafts 3 and 4;, which shafts are journaled in the swinging standards 5 and 6. 'lhcse standards are secured to the rock shafts 7 and 8, which shafts are supported in the brackets 9 and 10 secured to and suspended. from the bed 11. The driving power is transmitted from an overhead countershaft (not shown), through the medium of the straight belt A and the cross belt B, Fig. 3, the former running on the loose pulley 12 on the shaft 7 and the latter on the loose pulley 13 also rotatably mounted on the shaft 8.

141, l, is a pulley connected to or part of pulley 12, which carries the belt C, Fig.

Specification of Letters Patent.

Application filed May 27, 1913.

Patented June 2, 1914:.

derial No. 770,136.

3, up on to the pulley 15 of the polishing wheel shaft 3 for rotating said shaft. Motion is imparted to the other polishing wheel shaft lthrough the medium of its pulley l6, belt 1) and the pulley 17 secured to or part of pulley 18 on shaft 8.

18 is the cam shaft driven through the medium of the pulley 19, Figs. 1 and 4:, mounted on the polishing wheel shaft 3; bolt E connecting said pulley with the loose pulley E29 and tight pulley 21 on shaft belt l connecting the cone pulley :23 011 shaft 22 with the cone pulley 24 on shaft 2". On this latter shaft is a pinion (not shown), which meshes with and drives the large gear 26 on the before mentioned cam shaft. Belt 61- connects the cone pulley 27 on shaft 22 with the cone pulley 28 on shaft 29 for actuating the vibrating mechanism connected with the knife holder, presently to be more fully described.

The horizontally actuating mechanism for the knife holder comprises the cam. 30 en gaged by the roll 31, Fig. 2, carried by the swinging lever 32 having the slot 33, Fig. 4t, adjustably fulcrumed on the stud 84., which latter is also vertically adjustable in the slot 3 1- of the bracket 10. The upper end of this lever carries the roll 2-35 engaging the forked end of the slide 36 mounted on the square bar 37 projecting from vertically operating slide 38 mounted on the upright- 39. The knife holder, Fig. 1, comprises the movable jaw 40 and the stationary jaw 11 pivoted together as shown, and actuated in, the usual. manner to grip the knife handle 4-2 by means of the cam block 13 and its handle 14, as shown at Fig. 1.

The knife holder is longitudinally reciprocated with the slide 86 through the medium of the angular rod l5 secured to said slide, and in the block 4-15 to which the stationary handle gripping jaw l0 is also attached. The uprights 41-7, embracing the polishing wheels, are attached to the vertical slide 38 by the arm 48 and reciprocate with said slide. 19 are rolls in the top of these uprights to support the back of the knife blade 50.

51 is a vertically movable forked knife support adapted to maintain the blade in an upright position until its point has been entered between the polishing wheels, when it will be depressed through the medium of the arm 52 secured to the one end of the angular rod 4l-5 with its free end, Fig. 1,

in contact with the lever 53 whose forward end is pivoted to the forward end of the lever 54, which forward end of lever 54 is pivoted to that part of the knife support 51 which projects through the plate 55 attached to one of the vertically movable uprights 47. The outer end of lever 54- is pivotally supported to the plate 55 by the screw 56.

57 is a spring which tends to keep the forked knife support normally elevated while the arm 52, as before mentioned, will temporarily depress it.

The adjustable connection of the outer end of lever 53 with lever 54, by means of the thumb screw 58, varies the tripping or depression of the forked knife support 51.

In order to impart a finer finish to the knife blade, it should be made to vibrate vertically as it passes longitudinally between the polishing wheels during its forward and return stroke. This is accomplished as follows: 59, Figs. :1 and 2, is a plate secured to the end of shaft 29 with the slot 60 in its outer face to receive the adjustable block 61, to which is pivotally secured the forked block 62 by screw 63. 6 1 is a similar forked block carried at the outer end of the oscillating lever 65, and 66 are intermediate blocks pivoted to the forked blocks, and 67 is an adjusting screw connecting block 66. 68 is a hand wheel to actuate said screw and adjust the position of the sliding block 61 in the plate or disk 59. The forward end of the lever is pivotally connected to the vertically operating slide 38, so that, when the block 61 is moved from the center of the disk 59, the vertical recipro-catory movement of the slide 38 will be proportionate to the distance the block 61 is from the center of said disk.

As the machine is constructed to impart arapid vertical reciprocatory movement to the knife during its longitudinal movement, as well as to polish one-half of the blade on its forward longitudinal stroke and then raise the knife carrying mechanism to polish the other half of the blade on its return stroke, the fulcrum lever 69 is associated with the rapid vertically reciprocating mechanism as follows: 70 is a standard to which the outer end of said lever is pivoted, and it is also pivoted at the point 71 to the lever 65. The inner forked end of lever 69 carries the roll 72 contacting with the cam or concentric plate 73, as the case may be, secured to the cam shaft 18. If one-half of the blade is to be polished on its forward stroke; then raised to polish the other half on its return stroke, the roll 72 will contact with a cam on shaft 18, and the block 61 will be moved to the center of motion represented by the center of the disk 59 when the lever 65 will simply be under the control of lever 69 and actuated thereby. If,

,ing standards 5 on the other hand, the rapid, vibratory mechanism is brought into operation, a concentric plate is used in place of a cam for the roll 72 to contact with, and the block 61 is eccentrically located with respect to the center of the disk 59. lVhen thus arranged, the pivotal point 71 will serve as a fulcrum for lever 65 to oscillate the slide 38 and all of the mechanism connected therewit Rods 7 1, 75 project freely through the swinging standards 5 and 6, and 76, 77 are springs on said rods which exert an inward tension on the standards regulated by the hand wheels 78, 79 mounted on the threaded portion of said rods.

80, Fig. 2, is a movable stop adapted to limit the inward travel of the polishing wheel 2. This stop is connected to the threaded end of the small shaft 81, Fig. 2, while the opposite end of this shaft carries the bevel pinion 82, Fig. 1, meshing with pinion 83 on shaft 84 whose outer end carries the hand wheel 85.

To effect the small adjustment required to bring the polishing wheels in alinement with each other, the inner threaded ends of rods 86, 87 engage threaded holes in the outer ends of shafts 7 and 8, so that said shafts and the standards 5 and 6 can be longitudinally moved through the medium of the hand wheels 88, 89.

95, Fig. 1, rolls 96, 97 on the ends of this lever rest, when the wheels are in contact with a knife blade, on the incline face of i the heads 98, 99, in which position they are placed by the engagement of cam 90 with the roll 92. When a blade is polished, the

cam 91 is timed to engage the roll 98 and swing the lever 94 so that the rolls in its end will rest in the depressions 100 of the heads 98, 99, and this position of the lever will also represent the open position of the polishing wheels. The shank portions 101,

102 of the heads project through the swingand 6, and said heads are adjusted to and from the standards by means of the screws 103, 104l extending through the polishing wheel standards with -ed to travel in the involute groove 111 of weaves the scroll plate, Fig. 5. When the handle lever is actuated to carry the belt on to the tight pulley 21 to set in operation the cam shaft, it will. also withdraw the point of the screw 110 from the position of rest, shown in Fig. 6, and the spring 112, Fig. 5, will. force the lever 109 down to bring the point of the screw opposite the inner end of the groove 111 when the spring 113, Fig. l, will actuate the shipper suflicient to carry said screw point into said groove. When the polishing operation on a blade is completed, the screw will have run out of the groove into the position shown at Fig. 6, which will permit the spring 113 to actuate the shipper and carry the belt E on to the loose pulley 20 and bring the cam shaft 18 to a state of rest.

At the commencement of the polishing operation the knife blade is below the center of the polishing wheels and is raised, when the vibrating mechanism is not in action, to polish one-half of the blade on the forward stroke, as before mentioned, and raised again at the completion of such forward stroke to polish the remaining half of the blade on the return stroke. But when the vibrating mechanism is in operation, the rapid vibration is continuous throughout the longitudinal forward and backward stroke so as to polish each side of the blade from back to edge and from point to shoulder.

Having thus described my invention, what 1 claim is:

1. In a machine of the character described comprising opposed abrasion wheels having parallel arbors rotatably mounted in stand ards adjustably secured to rocker shafts, means for effecting a longitudinal adjust ment of the shafts, rods projecting laterally through the standards and supported there in, supports for the outer ends of the rods, springs on said rods adapted to normally force the wheels toward each other, means on said rods for regulating the tension of the springs, and an adjustable stop to limit the inward position of one of the wheels.

2. In a machine of the character described comprising opposed abrasion wheels having rotatable shafts ournaled in standards sup ported on rocking shafts, aswinging lever located between the wheels, rolls carried by the lever and located on each side thereof and beyond its central support, wipiiig cams on each side of the lever, a rotatable cam shaft for the cams, said cams adapted to alternately actuate the lever, one to force the wheels apart and lock them in open position, and the other to release the wheels and permit them to return to their inward working position.

3. In a machine of the character described comprising opposed abrasion wheels journaled in standards supported on rocking shafts, a swinging lever between the wheels, rolls in the ends of the lever, heads adjustably supported in the wheel standards, having incline faces against which faces the rolls are adapted to rest when the wheels are in working position, wiping cams on each side of the lever, one of said cams adapted to actuate the lever to throw the wheels in open position, and means on the adjustable heads to temporarily maintain them in such position, the other of said cams adapted to release the lever, and springs adapted to force the wheels into their inward working position.

4. In a machine of the character described comprising opposed abrasion wheels journaled in standards supported on rocking shafts, a knife holder, a slide with which said holder is connected, an angular supportfor the slide, a lever for horizontally actuating the slide, a cam on the wiping cam shaft for actaiat-ing the lever to give a horizontally reciprocating movement to the knife holder, said lever pivotally supported, and means for vertically adjusting its pivotal support.

5. In a machine of the character described comprising opposed abrasion wheels having rocking supports and mechanism for actuating said supports to and from each other, a knife holder, a horizontally operating slide connected therewith, a. support for the slide, a vertically operating slide connected with said support, a cam shaft, a cam thereon, a lever actuated by the cam to actuate the knife holder slide, lever for actuating the vertically operating slide, lever 69 on which lever 65 is fulerumed, the outer end of lever 69 pivoted to a stationary support, the inner end adapted to engage with a cam on the cam shaft to actuate the vertically operating slide at the tein'iination of the horizontal travel of the knife, rotatable means for actuating the reciprocating lever 65 during the horizontal travel of the knife, and means for adjusting the throw of said lever 65.

G. In a machine of the character described and in combination with opposed abrasion wheels mounted on rocking supports, a knife holder, a horizontally operated slide connected therewith, a support for said slide, a vertically operating slide carrying said support, an oscillating lever engaging the vertically operating slide, a support for said lever, a rotatable shaft, and an adjustable connection connecting said oscillating lever with the shaft.

in testimony whereof I ailii; my signature in presence of two witnesses.

CARL l-l. l-lEMli HNG.

ll itnesses James FEETJEY, Fnnnn. H. Bnonwrrrr.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents, Washington, D. 0. 

